///**
// *    Copyright 2009-2018 the original author or authors.
// *
// *    Licensed under the Apache License, Version 2.0 (the "License");
// *    you may not use this file except in compliance with the License.
// *    You may obtain a copy of the License at
// *
// *       http://www.apache.org/licenses/LICENSE-2.0
// *
// *    Unless required by applicable law or agreed to in writing, software
// *    distributed under the License is distributed on an "AS IS" BASIS,
// *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// *    See the License for the specific language governing permissions and
// *    limitations under the License.
// */
//package org.apache.ibatis.io;
//
//import java.io.File;
//import java.io.IOException;
//import java.io.InputStream;
//import java.io.InputStreamReader;
//import java.io.Reader;
//import java.net.URL;
//import java.net.URLConnection;
//import java.nio.charset.Charset;
//import java.util.Properties;
//
///**
// * A class to simplify access to resources through the classloader.
// *
// * @author Clinton Begin
// */
//public class Resources {
//
//    private static ClassLoaderWrapper classLoaderWrapper = new ClassLoaderWrapper();
//
//    /**
//     * Charset to use when calling getResourceAsReader.
//     * null means use the system default.
//     */
//    private static Charset charset;
//
//    Resources() {
//    }
//
//    /**
//     * Returns the default classloader (may be null).
//     *
//     * @return The default classloader
//     */
//    public static ClassLoader getDefaultClassLoader() {
//        return classLoaderWrapper.defaultClassLoader;
//    }
//
//    /**
//     * Sets the default classloader
//     *
//     * @param defaultClassLoader - the new default ClassLoader
//     */
//    public static void setDefaultClassLoader(ClassLoader defaultClassLoader) {
//        classLoaderWrapper.defaultClassLoader = defaultClassLoader;
//    }
//
//    /**
//     * Returns the URL of the resource on the classpath
//     *
//     * @param resource The resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static URL getResourceURL(String resource) throws IOException {
//        // issue #625
//        return getResourceURL(null, resource);
//    }
//
//    /**
//     * Returns the URL of the resource on the classpath
//     *
//     * @param loader   The classloader used to fetch the resource
//     * @param resource The resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static URL getResourceURL(ClassLoader loader, String resource) throws IOException {
//        URL url = classLoaderWrapper.getResourceAsURL(resource, loader);
//        if (url == null) {
//            throw new IOException("Could not find resource " + resource);
//        }
//        return url;
//    }
//
//    /**
//     * Returns a resource on the classpath as a Stream object
//     *
//     * @param resource The resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static InputStream getResourceAsStream(String resource) throws IOException {
//        return getResourceAsStream(null, resource);
//    }
//
//    /**
//     * Returns a resource on the classpath as a Stream object
//     *
//     * @param loader   The classloader used to fetch the resource
//     * @param resource The resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static InputStream getResourceAsStream(ClassLoader loader, String resource) throws IOException {
//        InputStream in = classLoaderWrapper.getResourceAsStream(resource, loader);
//        if (in == null) {
//            throw new IOException("Could not find resource " + resource);
//        }
//        return in;
//    }
//
//    /**
//     * Returns a resource on the classpath as a Properties object
//     *
//     * @param resource The resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static Properties getResourceAsProperties(String resource) throws IOException {
//        Properties props = new Properties();
//        try (InputStream in = getResourceAsStream(resource)) {
//            props.load(in);
//        }
//        return props;
//    }
//
//    /**
//     * Returns a resource on the classpath as a Properties object
//     *
//     * @param loader   The classloader used to fetch the resource
//     * @param resource The resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static Properties getResourceAsProperties(ClassLoader loader, String resource) throws IOException {
//        Properties props = new Properties();
//        try (InputStream in = getResourceAsStream(loader, resource)) {
//            props.load(in);
//        }
//        return props;
//    }
//
//    /**
//     * Returns a resource on the classpath as a Reader object
//     *
//     * @param resource The resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static Reader getResourceAsReader(String resource) throws IOException {
//        Reader reader;
//        if (charset == null) {
//            reader = new InputStreamReader(getResourceAsStream(resource));
//        } else {
//            reader = new InputStreamReader(getResourceAsStream(resource), charset);
//        }
//        return reader;
//    }
//
//    /**
//     * Returns a resource on the classpath as a Reader object
//     *
//     * @param loader   The classloader used to fetch the resource
//     * @param resource The resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static Reader getResourceAsReader(ClassLoader loader, String resource) throws IOException {
//        Reader reader;
//        if (charset == null) {
//            reader = new InputStreamReader(getResourceAsStream(loader, resource));
//        } else {
//            reader = new InputStreamReader(getResourceAsStream(loader, resource), charset);
//        }
//        return reader;
//    }
//
//    /**
//     * Returns a resource on the classpath as a File object
//     *
//     * @param resource The resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static File getResourceAsFile(String resource) throws IOException {
//        return new File(getResourceURL(resource).getFile());
//    }
//
//    /**
//     * Returns a resource on the classpath as a File object
//     *
//     * @param loader   - the classloader used to fetch the resource
//     * @param resource - the resource to find
//     * @return The resource
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static File getResourceAsFile(ClassLoader loader, String resource) throws IOException {
//        return new File(getResourceURL(loader, resource).getFile());
//    }
//
//    /**
//     * Gets a URL as an input stream
//     *
//     * @param urlString - the URL to get
//     * @return An input stream with the data from the URL
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static InputStream getUrlAsStream(String urlString) throws IOException {
//        URL url = new URL(urlString);
//        URLConnection conn = url.openConnection();
//        return conn.getInputStream();
//    }
//
//    /**
//     * Gets a URL as a Reader
//     *
//     * @param urlString - the URL to get
//     * @return A Reader with the data from the URL
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static Reader getUrlAsReader(String urlString) throws IOException {
//        Reader reader;
//        if (charset == null) {
//            reader = new InputStreamReader(getUrlAsStream(urlString));
//        } else {
//            reader = new InputStreamReader(getUrlAsStream(urlString), charset);
//        }
//        return reader;
//    }
//
//    /**
//     * Gets a URL as a Properties object
//     *
//     * @param urlString - the URL to get
//     * @return A Properties object with the data from the URL
//     * @throws java.io.IOException If the resource cannot be found or read
//     */
//    public static Properties getUrlAsProperties(String urlString) throws IOException {
//        Properties props = new Properties();
//        try (InputStream in = getUrlAsStream(urlString)) {
//            props.load(in);
//        }
//        return props;
//    }
//
//    /**
//     * Loads a class
//     *
//     * @param className - the class to fetch
//     * @return The loaded class
//     * @throws ClassNotFoundException If the class cannot be found (duh!)
//     */
//    public static Class<?> classForName(String className) throws ClassNotFoundException {
//        return classLoaderWrapper.classForName(className);
//    }
//
//    public static Charset getCharset() {
//        return charset;
//    }
//
//    public static void setCharset(Charset charset) {
//        Resources.charset = charset;
//    }
//
//}
